Rough idling

Tiny
STEPHEN M
  • MEMBER
  • BMW 318
1997 BMW 318is. 182000km. My car has developed a rough idle in nuetral and low gear - instead of idling at about 900rpm it is idling betwen 500rpm and 1000rpm, with a tendency to settle down around 500 rpm. It is more difficult to start and needs gas to stop it from stalling while idling. No problem in higher gears. Any idea as to the problem?
Tuesday, October 23rd, 2007 AT 10:07 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,603 POSTS
Possibly the crank case vent valve has failed
part # is 11-15-7-501-567
it is right on top of the manifold.
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Monday, October 29th, 2007 AT 10:47 AM

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